MCQ
Progesterone in the contraceptive pill:
- ✓Prevents ovulation
- BInhibits estrogen
- CChecks attachment of zygote to endometrium
- DAll the above
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$I$. $GEAC$ make decisions regarding the validity of the $GM$ research
$II$. It checks the safety of introducing $GM$ organisms for the public services for their large scale use
Which of the statements given above is/are correct?
$I.$ Species diversity increases as we move away from the equator towards the poles.
$II.$ Stellar's sea cow and passenger pigeon got extinct due to overexploitation by man.
$III.$ Lantana and Eichhornia are invasive weed in India.
$IV$. The historic convention on biological diversity was held in $1992 .$
Choose the option containing correct statements.
$A.$ Detrivores perform fragmentation.
$B.$ The humus is further degraded by some microbes during mineralization.
$C$. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
$D$. The detritus food chain begins with living organisms.
$E$. Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the options given below: